title: The prevalence of cystic abnormalities of the prostate involving the ejaculatory ducts as detected by transrectal ultrasound.
abstract: OBJECTIVE
  To determine the prevalence of cystic lesions of the prostate involving the ejaculatory ducts using transrectal ultrasound (TRUS).
  
  
  METHODS
  The prevalence of cystic lesions of the prostate involving the ejaculatory ducts was determined in a prostate cancer screening group and also in an "at risk" population of men with infertility.
  
  
  RESULTS
  Cystic lesions of the prostate involving the ejaculatory ducts as detected by TRUS were detected in 5.0% (20 of 400 consecutive men) in a prostate cancer screening population. In contrast, these abnormalities were present in 17.0% (23/135) of the "at risk" infertile men who had TRUS performed.
  
  
  CONCLUSIONS
  This is the largest series to date defining the prevalence of TRUS-identified cystic lesions of the prostate in a non-infertility population. While cystic lesions of the prostate involving the ejaculatory duct are uncommon in an otherwise healthy and fertile male, their prevalence increases in infertile men whose examination and semen analyses make them "at risk" for having ductal obstruction.
authors.affiliation: Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA.
authors.forename: E D
authors.initials: ED
authors.lastname: Kim
authors.forename: E
authors.initials: E
authors.lastname: Onel
authors.forename: S C
authors.initials: SC
authors.lastname: Honig
authors.forename: L I
authors.initials: LI
authors.lastname: Lipschultz
mesh_terms: D000328:Adult; D003560:Cysts / Q000000981:diagnostic imaging* / Q000473:pathology; D004108:Dilatation, Pathologic; D004543:Ejaculatory Ducts / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011469:Prostatic Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D013081:Sperm Motility; D014463:Ultrasonography